Define a period

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How many working days in year 2040?

Here is the detail of the calculation:

Because 2040 is a leap year, it has 366 days.

Let's remove 52 saturdays and 53 sundays. It remains 261 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 2040.

Here is the list of these 9 public holidays:

1. Skjærtorsdag : Thursday, 29 March, 2040
2. Langfredag : Friday, 30 March, 2040
3. Andre påskedag : Monday, 2 April, 2040
4. Første mai : Tuesday, 1 May, 2040
5. Kristi Himmelfartsdag : Thursday, 10 May, 2040
6. Grunnlovsdagen : Thursday, 17 May, 2040
7. Andre pinsedag : Monday, 21 May, 2040
8. Første Juledag : Tuesday, 25 December, 2040
9. Andre Juledag : Wednesday, 26 December, 2040

And here are the 3 public holidays falling on a weekend:

1. Første nyttårsdag : Sunday, 1 January, 2040
2. Første påskedag : Sunday, 1 April, 2040
3. Første pinsedag : Sunday, 20 May, 2040